posted 12 years ago
I've been making and selling soap for five years. The best liquid soap that you can make involves potasium hydroxide and an involved process that requires a bit of learning. I haven't tried yet although I have a pound of potasium hydroxide in my stash, and have had for several years. To get real grease cutting, you want a detergent. Not all detergents are the same; some come from natural, friendly coconut derived sources. However, they are pretty much drying to more or lesser degrees. You can do a bit of research to find some that are less so.
If you want skin friendly, I would maybe try a liquid soap with potasium (spelling, too tired to look up) hydroxide. The molecule structure makes the soap not solid like sodium hydroxide will do, but it is still, basically soap and therefore not very good with grease cutting. Adding orange oil will help.